package com.tedu;

import java.util.TreeMap;

public class TreeMapDemo {
    public static void main(String[] args) {
        TreeMap<String,Integer> map = new TreeMap<String, Integer>();
        map.put("tom",90);
        map.put("amy",80);
        map.put("jack", 70);
        map.put("rose", 88);
        System.out.println(map);
        System.out.println(16>>3);
    }
}
